Nicki Minaj and Lil Wayne got steamy in their 'High School' video, but make no mistake: the pair got pretty silly, too. And in the case of Minaj, she also got slippery ... as in nip-slippery.

A new behind-the-scenes look at the video shows the Female and original Weezy's goofy sides, and they're so adorable together!

Minaj thoroughly enjoyed filming her Jacuzzi scenes, even though they had to be re-shot and edited to contain her ample curves. Soon, a crew member carried the pint-sized powerhouse to the next location, where she met up with Tunechi. When they were supposed to be giving one another lustful looks, the pair just giggled -- something Wayne predicted. "I knew she was gonna laugh!"

As for that infamous kissing scene? Minaj confirms that her chuckles were real -- and almost constant. "We kept on laughing the whole time. He was like, 'Stop laughing!'" she told MTV News. "And I was like, 'Alright,' and I would burst out laughing again."

The Harajuku Barbie revealed that the smooch was Weezy's idea. He had to work pretty hard to sell it to her, but not because she didn't find him attractive. "Wayne said that we had to kiss. He was like, 'Yo, one thing that’s gonna sell it is that if we really kiss.' And I was like, 'Ehhhh ...'”

"Not only is he my boss, but he’s also my brother," the 'American Idol' judge explained. "But Wayne is still so sexy. I texted Wayne, I was like, 'Yo, you gon’ have all the chicks back on your d--- when this video come out. He looks like a piece of art because he’s all tatted up, and it’s just so sexy, black and beautiful."